Question

How to check if a number is perfect square in TypeScript

Answer 1

// Perfect squares are: 1(1*1), 4(2*2), 9(3*3), 16(4*4), 25(5*5), 36(6*6)...
 
function is_perfect_square(n: number) {  
    const sqr = Math.sqrt(n); 
    
    return sqr == Math.floor(sqr); 
}
  
    
if (is_perfect_square(36)) 
    console.log("Yes"); 
else
    console.log("No");          
 
if (is_perfect_square(20)) 
    console.log("Yes"); 
else
    console.log("No");  
    
 
     
   
/*
run:
   
"Yes" 
"No" 
   
*/
   
   

   

 

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